I have captured video from VHS and have made 5 DVDs (5 different productions). I need to remove files from my hard drive to free up space. If I copy a production to an external device, then run that program, it says files cannot be found. How can I actually save a copy of the final movie on the external hard drive? What file extensions/formats on files do I need to be looking for? i have some files that show they are are movie clips, some as video clips, and other Roxio Media Production, and some are DAT files. I just want to save the final productions to the external device and delete the other files that aren't needed. Thanks!